linux-kernel - [PATCH] mm/percpu.c: change GFP_KERNEL to GFP

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Message-ID: <7aa3a1cee63518cb13906d11ea130c9c@208suo.com>
Date:   Tue, 18 Jul 2023 14:35:11 +0800
From:   sunran001@...suo.com
To:     dennis@...nel.org, tj@...nel.org, cl@...ux.com,
        akpm@...ux-foundation.org
Cc:     linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: [PATCH] mm/percpu.c: change GFP_KERNEL to GFP_ATOMIC

ERROR: function pcpu_balance_populated called on line 2238 inside lock
on line 2234 but uses GFP_KERNEL

Generated by: scripts/coccinelle/locks/call_kern.cocci

Signed-off-by: Ran Sun <sunran001@...suo.com>
---
  mm/percpu.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/percpu.c b/mm/percpu.c
index 28e07ede46f6..d8809c7511cd 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -2033,7 +2033,7 @@ static void pcpu_balance_free(bool empty_only)
  static void pcpu_balance_populated(void)
  {
      /* gfp flags passed to underlying allocators */
-    const gfp_t gfp = GFP_KERNEL | __GFP_NORETRY | __GFP_NOWARN;
+    const gfp_t gfp = GFP_ATOMIC | __GFP_NORETRY | __GFP_NOWARN;
      struct pcpu_chunk *chunk;
      int slot, nr_to_pop, ret;